Salaries for financial analyst jobs at the manager level can be anywhere from $81,000 to $103,000 at a small company, to $92,250 to $122,000 at a midsize company, and $104,00 to $141,750 at a large company. So as you can see, there's room to grow.
They place the valves as well as the camshaft above the cylinder(s). This means that all OHC engines are technically OHV engines, but not all OHV engines are OHC engines. With fewer moving parts, there are fewer issues that can arise with OHC models. Also, they run cooler and more efficiently than the OHVs.
I've got an 83 G1E that the motor is bad and the batteries are 6 years old. I was thinking about converting it over to gas rather than keeping it electric. I've also got an old Case riding tractor/mower 10 hp Kohler engine with Hydrostatic drive (fluid drive) that runs good and I don't use anymore. The thing is built like a tank, everything is waaay heavier duty than was ever needed for a mower.